Milking appliance.



J. HENRIGHSEN & C. J. HEMMINGSEN.

MILKING APPLIANCE.

APPLICATION FILED DEO.11,1908.

Patented Nov. 2, 1909.

2 SHEETS-SHEET 2.

W/TNESSES:

UNITED sTATEsri rrENT OFFICE.

JACOB HENRIGHSEN AND CARL J OHANNL ES HEMMINGSEN, OF COPENHAGEN, DENMARK.

MILKING APPLIANCE.

Specification of Letters Patent/a,

Patented Nov. 2, 1909.

Application. filed December 11, 1908. Serial No. 466,932.

To all whom it may concern:

Be it known that we, J AcoB HENRICI-ISEN, of 21 Loengangsstraede, Copenhagen, Denmark, and CARL JOHANNES HEMMINosEN, of l0 Enghavevej, Copenhagen, Denmark, have invented new and useful Improvements in Milking Appliances, of which the following is a specification.

This invention has reference to appliances of the type in which the milking is effected by suction.

The main novelty ina milking appliance constructed according to this invention consists in the connection between the suction pipe and the sucking cup being effected through a fine aperture or conduit arranged in or alongside a diaphragm, which separates the suction pipe from the sucking cup.

Owing to its own elasticity, or under the influence of a spring or the like, the said separating member is caused to normally bear against and thereby close the outlet or'suction aperture of the sucking cup with a certain pressure so that normally the suction cannot be transmitted from the suction pipe to the sucking cup, but whenever such member is removed from the outlet aperture by actuation of an external member, or when a suitably arranged valve is opened, the suc-- tion action will extend to the sucking cup through the fine aperture before mentioned.

When the milk begins to flow from the sucking cup through the fine aperture the separating member will, owing to the pressure of the milk and the relatively slow passage thereof through the aperture, and the consequently relative increase of the suction action below the separating member, be au-- tomatically held removed from the outlet aperture so that it will be then no longer necessary tomaintain, from the outside, the

opening effected for starting. The suction action .for milking continues as long as milk is flowing through the fine aperture, and whenever the milk ceases to flow the aperture will merely form a passage for the air in the sucking cup, and as this air is able to equalize the difl'erencein pressure on both sides of the separating member quicker than milk the member will again be moved by. its own tension or its spring or the like, in a direction to close the outlet aperture, and the teat to which the sucking cup is applied will thereupon be no longer exposed to sucking action.

An appliance constructed as described can struction of the appliance,

be used by itself or two or be combined into a group.

The drawing shows two forms of conin which the separating member is a diaphragm provided itself with the fine hole while the starting aperture is controlled by a valve independent of the diaphragm.

Figure 1 shows a vertical section through the one form of construction, and Figs. 2 and 3 show two vertical sections at right angle to eachother, of the second form of construction.

a Fig. l .is the sucking cup mounted in a cast metal piece 6 which is formed with an outlet aperture or channel 0.

cl is a lateral opening communicating with the discharge aperture or channel 0 and which is controlled by a starting-Valve 6 connected to an external handle 7 or an operating button or the like, a spring 9 being provided for normally keeping the valve 6 closed.

h is a flexible diaphragm, which may be made of india rubber, bearing a ainst the outlet 0 and which to one side of the part thereof which closes such outlet (the middle part in the example illustrated) is formed with a small hole 1c, sayv a hole of one half a millimeter in diameter for instance.

The marginal portion or rim of the diaphragm is formed as a ring Z and is fastened between the piece I) and a connecting piece m for the Suction pipe. The parts I) and m are connected together by a screw-thread as sliiown, or a bayonet joint connection, or the li e.

The part m may be fitted with a perfofour of them may rated guard a to limit the expansion of the diaphragm h and minimize the danger of breakage. As another and additional guard against accidents the outlet channel 0 may be provided with a valve 0 the stem of which rests upon the diaphragm so that whenever the diaphragm is ressed too far down or breaks the channe is closed automatically by the valve.

During the expansion of the diaphragm the hole k will also expand somewhat whlch is one of the advantages of forming the hole in the diaphragm proper.-

In the form of construction shown in Figs. 2 and 3 the lower part 72 of the sucking cup a is provided with a screw-thread, and between the parts I) and p is inserted a strainer g. The starting valve consists of a rod 6 provided at one end with a button f and with the other end actuating an india-rubber valve-bod 'r inserted between the side-opening at an the wall part, b, so that normally the said valve will close the side-opening. But when the button f is pressed the end of the rod e that projects through the channel 0 and the opening d will push the valve 1' into position to uncover this opening. a is a screw limiting the movement of the rod 6. In this form of construction the diaphra m h is fastened between the parts b and m y means of a nut t' screwed onto the partb. 7

u is an india-rubber ring arraned at the top of the sucking cup a, and its 0 ject is to make a tight fit between the teat and the sucking cup so as to prevent this latter from falling down. that the sucking cup shall not loosen itself too soon from the teat, the arrangement shown in Fig. 3 may be used. This arrangementconsists ofa channel 0 in the part b and a ipe w communicating with the said channe r. The upper end of the pi e w projects through a corresponding ho e in that part of the diaphragm it that is outside the ring I, and is pressed tightly against the channel n when the parts I), m and t are screwed together. The lower end of the pipe w communicates with the interior of the casing a in which is arranged a valve 3 that is either influenced by a spring or loaded. In the construction shown the valve 0 is an india-rubber cone upon which rests a weight capable of moving freely inside the casing a within certain limits, so that the valve only gets a small lift. Z is an outlet from the lnterior of the casing 02. The valve y being loaded it will remain closed as long as the difference between the vacuum in the sucking cup (1. and the vacuum in the suction conduit or the part m keeps within a certain limit. This is generally the case as long as the outlet 0 is open. ut, when the quantity of milk coming from the teat is so large that the fine opening 7 is too small for allowin the milk to pass through quickly enough, or when on the other hand the flow of milk from the teat stops, at which moment .the diaphragm 71, will contract and close the outlet 0, the vacuum in the sucking cup at will quickly decrease, partly on account of leakage and part-1y on account of the presence of milk in the sucking cup. The unaltered high vacuum inside the part m will then at a certain moment cause the valve y, .2 to open so as to allow the milk that may be present in the sucking cup to be sucked out through the by-pass channel 42, the by-pass pipe w and the outlet Z, whereby the vacuum inside the sucking cup will again rise to a certain fixed limit before the cup For making still more sure can fall off from the teat. If milk should teat and having a milkassa e leading to the suction-pipe, and a exib e diaphragm which norma ly closes said passa ut which-permits the passage of the m1 k.

3. In a milking apphance, the combination of a suction-cup having a milk-passage,

a perforated diaphragm normally closing said passage, and means to move said diaphragm away from the passage to start the flow of milk through the same.

4. In a milking appliance, the combination of a suction-cup having a milk-passage, a perforated diaphragm normally closing said passage, and a valve by'which the ressure on the diaphragm toward the si e of the suction-cup may be increasedin order to moi e the diaphragm away from the milkpass device by which the suction in the suction-cup and suction-pipe is automatically equalized.

7 In a milking appliance, the combina-.

tion of a suction-cup having a milk-passage leading to the suction-pipe, a diaphragm to close said passa e, a by-pass channel leading from one side 0 the diaphragm to the other, and a suction-operated valve to control said by-pass channel.

In testimony, that we claim the foregoing as our invention, we have signed our names in presence of two subscribing witnesses.

JACOB HENRICHSEN. CARL JOHANNES HEMMINGSEN Witnesses:

P. HOFMAN BANG, ERNEST BOUTARD. 

